Process of tubulating glass bottles, retorts, and the like.



n. BARBER, In PROCESS OF TUBULA'HNG GLASS BOTTLES, R'ETORTS, AND THELIKE.

APPLICATION FILED JAN. 131191]- Patented June 19, 1917.

FIGJ.

Witness: 1

Ma.- al Q (2. k

Atlnrney.

UNITED STATES PATENT OFFICE;

BALPH BABBEB, JR, OF MILLVILLE, NEW JERSEY, ASSIGNOR TO VICTOR DUBAHD, J3;, OF VINELAND, NEW JERSEY, TRADING AS VINELAND FLINT GLASS WORKS.

PROCESS OF TUBUL ATING GLASS IBQTTLES, REY-[1103358, AND THE LIKE.

Application filed January 18, 1817. serial Io. 148,198.

To all whom it may concc'mu Be it known that I, RALPH BARBER, J r.,'acitizen of the United States, and a resident of Millville, in the countyof Cumberland and State of New Jersey, have invented a certain new anduseful Process of Tubulatin Glass Bottles, Retorts,and the like, of w'clvthe following is a specification.

The-princi al objects of the present invention. are, [i istto reduce thecost and simplify the"op'eration of making'tubulatures, side-necks,extra-necks, hose-connections, screw-necks and the-like on glassbottles; retorts, jars and hollow glass articles .gen-

' 15 orally, such for example as are used in chemical andphysicalwlaboratories and in other places; and second, to produce suchtubulatures and the like of practically any shape alld of great uniformiy.

To these and other ends hereinafter stated the invention comprises theprocess of tubw lating hollow glass articles which consists in applyinga drop of molten glass to the Wall of the article while hot from itsinitial heat to locate the tubulature and soften the u-nderlying 'glass,blowin both applied j and softened glass into a 1101 ow projection,

B5 for the purpose ofcon I illustrated or to the particulartubulatures''showm,

-. F'gs. 6" and 7 applyingta mold to theprojeoti'on while still hot fromits initial heat, and blowing V the rejection into-the mold to shape thetubu ature, substantially as will be hereinafter described; Q

The process will be describedin connection with the accompanyingdrawingswhich are that the finished and shaped tubulature may mug it to thesteps intended for "use in exilaimng it and,not

In those drawings, Figurel is a side she vationaltview.

Figs,2, 3, and 1 are principally the process. v U Fig; 5, is a:viewrprincipally inysectifon illustrating what may-.be called thefinished product, and h are a detail and a top View of ppnratus usefuliii-the practice otthe "The article-1 haying been blown, -as by means ofthe blow 'pipe 2, and while-hot, has

applied to'it aydi op of molten glass 3. The place where this moltenglass is dropped on the article determines the location and size of thetubulature' and-theheat of the molten specilication of Letters Patent.-

Patented June 19, 1917.

cated at 6. The stretchingh can be accomplished by takin hold of e proection as at 7, by means 0 l a suitable instrument, and if desired theend beyond. 7 may be out ofi. It is desirable .to form the projection orextension 6 in de ending position since its Walls are quite soi t. Theprojection is then turned upward and the mold 8, of which onesection 9is shown in Fig. '6, is quickly applied to it while it is still hotfrom'its initial heat'and by continuing the blowing operation theprojection is shaped as at 10 to conform to the mold so that thetubulature is completed. Afterward the article is annealed and the endportion 7 is removed and the edge of the end roperly finished.

The tool illustrated in Figs. (Sand 7 forms the subject-matter of myapplication serially numbered 142,137, filed Jan. 13, 1917, and

'forthe purposes of this application it will be sufficient to say thatit consists of two sec tions 9 mounted on'the ends of a springhandle 11,which normally holds the two sections apart so that they can be "quicklyapplied over the end of the projection.

For the sake of description it may be said be of substantial-lytanyshape as it is evident that the mold can be madeto produce substantiallyany shape, although as shown it is intended to produce a sphericalenlargement,

V well adapted to constitute a hose connectloln V diagrammatic views insection'illustrating steps of However, two suchenlargementsn ay reducedor a screw-thread may be rouced all of which will be obvious to t oseskilled in the m.

uniform -he a vantage of" the described moss; I comparison with the oldrocess by whijcl'il the article in substantially t e cond tionshown in,Fig. 34 was annealed and thereafter heated annularly so as to soften itand re-connected up so'that a part like 10 could be produced by blowingand manipulating, is too obvious tothose skilled in the art to requirefurther explanatiomefon by the old Practice projections like 10 couldonly be ormed by skilled labor in what is usually known as the lampdepartment of the works and even then the product lacked uniformity.

The invention is not limited to the making and shaping of onetubulfature on the article, for it is evident that-entire than one canbe made in the manneridescribed.

What I claim is:

1. In the process of tubulating hollow glassarticles .by dropping moltenlass on the 'wall of the article while hot ro'm its initial heat tolocate the tubulature and softenfthe underlying-glass and by blowingboth the applied an softened glass into n hollow pro ection by theapplication. of air pressure from within the article, the improvementwhich consists in applying a mold to the hollow projection while itretains its initial heat, and converting the pro-' jection into atubulature by shaping t in the mold by a continuation of the applicationof air pressure from within the article.

2. In the process of tubulating-hollow glass articles by droppin moltenlass on the wall of the article w ile hot rom its initial heat to locatethe tubulature and soften the underlyin glass and by blowing both the,applied an softened glass into a hollow projection pressure from withinthe article, the improvement which consists in preparin' the projectionby elongating it, applying a mold to the prepared hollow projectionWhile it retains its initial heat, and converting the projection into atubulature by shaping it in themold by a continuation of the application of air pressure from within the article.

RALPH BARBER, JR.

the application of air

